Fritz!Box monitoring with grafana, influx, collectd and fritzcollectd

 A nice way to monitor your Fritz!Box is this here:

How can you achieve this:

https://fetzerch.github.io/2014/08/23/fritzcollectd/

and 

https://github.com/fetzerch/fritzcollectd

Here a list of the software packages you have to install

apt install -y collectd python3-pip libxml2 libxml2-dev libxslt1-dev influxdb nodejs git make g++ gcc npm net-tools certbot mosquitto mosquitto-clients grafana-server

for grafana-server and influxdb you have to add new repositories, because they are still not included in ubuntu.

To tell collectd, that it shoud write to influxdb, you have to uncomment the following in collectd.conf:

<Plugin network>
        Server "localhost" "25826"
</Plugin>

and in influxdb.conf:

[[collectd]]
  enabled = true
  bind-address = "localhost:25826"
  database = "collectd"
  retention-policy = ""
  typesdb = "/usr/share/collectd/types.db"
  parse-multivalue-plugin = "split"

and of course inside collectd.conf you have to add the fritzcollectd config from the github link above.

But with starting collectd you might get the error:

dlopen("/usr/lib/collectd/python.so") failed: /usr/lib/collectd/python.so: undefined symbol: PyFloat_Type

This can be solved with adding into /etc/default/collectd:

LD_PRELOAD=/usr/lib/python3.8/config-3.8-aarch64-linux-gnu/libpython3.8.so